Adhesion of neutrophils to Glu-Pg. Neutrophils were isolated from human blood, resuspended in HBSS, and labeled with calcein. FMLP-(100 nM) activated neutrophils were preincubated with anti-α_M mAb 44a (40 μg/mL), anti-α₅β₁ Ab 1950 (1:200 dilution), or tranexamic acid (5 mM) for 20 minutes at 25° C. Cells were then distributed into the wells coated with Glu-Pg (3.0 μg/mL). Fluorescence of adherent cells was measured as described in “Materials and methods.”